| Clue | Source | Date |
|---|---|---|
| Smell-O-Vision rival | The Washington Post | 30 Apr 2022 |
| Smell-O-Vision rival | LA Times Daily | 30 Apr 2022 |
| Film novelty that competed with Smell-O-Vision | Wall Street Journal | 02 Oct 2018 |
| Film novelty that competed with Smell-O-Vision | ||
| Smell-O-Vision competitor of 1950s cinema | New York Times | 20 May 2016 |
| '50s film gimmick | ||
| Rival of Smell-O-Vision, in Hollywood |